Flora of North America species comparison

erect, 3–6 dm, densely short-hairy when young, not glaucous.

subopposite or whorled (3s), subsessile;

blade oblanceolate or lanceolate to widely obovate, 5–16 mm, margins entire or serrulate, sometimes with 3–7 undulations instead of teeth.

spikelike racemes, short-hairy.

calyx 4–7 mm, lobes lanceolate;

corolla brownish yellow, pale yellow, or cream, purple- or reddish brown-lined, 10–15 mm, tube plus distinct throat 7–11 mm, longer than adaxial lip, adaxial lip 4–5 mm;

pollen sacs 0.8–1.1 mm;

staminode glabrous, usually included.